Application Support Engineer

As the founding entity of RAINBOW PARTNERS, Quanteam is a consulting firm specialized in Banking, Finance, and Financial Services. Through our core human values – proximity, teamwork, diversity, excellence – our 1000 expert consultants, hailing from 35 different nationalities, collaborate across 13 international offices:
Paris, Lyon, New York, Montreal, London, Brussels, Luxembourg, Geneva, Lisbon, Porto, Casablanca, Madrid and Singapore.

Our client, a leading Global Markets firm based in Chicago, is seeking a technical Application Support Engineer to join its Front Office Business Support & Monitoring IT team. This is a hands‑on, engineer‑first role providing Level 1/2 production support across mission‑critical trading, booking, pricing, and risk management systems for Equity Derivatives.

• Own Level 1/2 production support: incident triage, root cause analysis, escalation, and resolution across trading and booking platforms (Fidessa, Sophis, Dash, Loanet, etc.).
• Monitor, diagnose, and resolve issues in Unix/Linux environments using shell scripting, log analysis, process inspection, and job scheduling tools.
• Write and maintain Python scripts for alerting, automation, data reconciliation, and operational tooling.
• Investigate data and workflow issues using advanced SQL across relational (Oracle, Sybase, PostgreSQL) and No
  
  SQL data stores.
• Triage and resolve FIX protocol issues (session layer, order routing, drop‑copy, executions) across OMS/EMS connectivity.
• Collaborate with development teams globally on bug fixes, releases, and system enhancements, participating in technical design reviews.
• Serve as the primary technical interface for Front Office traders and desk heads, with clear, concise communication under pressure.
• Maintain and improve runbooks, technical documentation, monitoring dashboards, and alerting rules.

• Unix/Linux: Deep proficiency in Unix/Linux: shell scripting (Bash/KSH), process management, log analysis, and job scheduling (Autosys/cron) in a production trading environment.
• SQL: Advanced SQL skills across relational databases (Oracle, Sybase, PostgreSQL): complex joins, window functions, CTEs, and query tuning to investigate trade breaks and data issues.
• Python: Solid Python scripting for operational automation, data reconciliation, and API integrations using libraries such as pandas, SQL Alchemy, and requests.
• FIX Protocol: Strong knowledge of FIX 4.x/5.0: message‑level debugging (New Order Single , Execution Report, etc.), session management, and order flow troubleshooting across OMS/EMS platforms.
• Solid understanding of Equity Derivatives products, trade lifecycle (order routing, booking, risk, P&L), and familiarity with Equity Finance/Delta One instruments (TRS, repos, securities lending).
• Ability to engage credibly with traders and quants on product‑specific issues without step‑by‑step guidance.
• Bachelor's degree in Computer Science, Engineering, Mathematics, or a quantitative/finance discipline.
• 3+ years of hands‑on application support or production engineering experience in a capital markets environment.
• Strong analytical mindset, clear communication under pressure, and ability to thrive on a fast‑paced trading floor.

This role offers the chance to work closely with trading teams and cutting‑edge systems in a dynamic, multicultural environment.